DNA polymerases need a primer oligonucleotide (RNA or DNA) - their substrates are an existing 3'-OH group and a dNTP. The primase however is a typical RNA polymerase, capable of initiating polynucleotide synthesis de novo by positioning a complementary ribonucleoside 5'-triphosphate opposite its complementary DNA base.
Alison Schapker. Alison Schapker is an American television writer and producer. She is well known for her work on the ABC espionage series Alias and for the FOX science-fiction series Fringe.
Sarah Huckabee, left, with her father in 2007. Credit Yana Paskova for The New York Times Sarah Huckabee, the daughter of Mike Huckabee â the former governor of Arkansas and two-time presidential candidate â joined Donald J. Trumpâs presidential campaign this week as a senior adviser, giving Mr. Trump a toehold in Arkansas, one of 12 states that are holding nominating contests on Super Tuesday.